Note that http://www.mozilla.org/en-US/persona/ http://www.mozilla.org/en-US/persona/ uses public/private keys for authentication. The password is used to acce

Note that http://www.mozilla.org/en-US/persona/ http://www.mozilla.org/en-US/persona/ uses public/private keys for authentication. The password is used to access those keys at the identity provider. Replace the identify provider (idp) by a token. Bang. Much easier than rolling out yet another standard.